{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T17:49:42.598Z","years_from_j2000":26.684,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hip-106811","name":"HIP 106811","class":"m1v_red_dwarf","category":"star","object_type":"M1V red dwarf","mag":9.83,"mag_band":"V","abs_mag":9.208,"abs_mag_band":"V","distance_ly":43.435549446049585,"distance_method":"parallax","ra_deg":324.50145000000003,"dec_deg":27.723743,"epoch_ra_deg":324.803085,"epoch_dec_deg":27.843864,"epoch_moved_arcsec":12.755,"pm_ra_mas_yr":472.04,"pm_dec_mas_yr":-75.3,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pegasus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-106811","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"21379+2743","age_years":12729017000,"companions":[{"measured":2015,"magnitude":11.75,"components":"Aa,Ab","discoverer_code":"HDS3080","separation_arcsec":0.2,"position_angle_deg":155},{"measured":2023,"magnitude":15,"components":"AC","discoverer_code":"SKF 245","separation_arcsec":3.4,"position_angle_deg":12},{"measured":2023,"magnitude":15,"components":"AD","discoverer_code":"CAC  25","separation_arcsec":3.5,"position_angle_deg":11},{"measured":2021,"magnitude":12.71,"components":"AB","discoverer_code":"MLB1093","separation_arcsec":33,"position_angle_deg":269}],"mass_solar":0.548,"radius_solar":0.548,"spectral_type":"M1V","color_index_bv":1.495,"luminosity_solar":0.01806342083169975,"metallicity_fe_h":0.19,"variable_mag_max":9.777,"variable_mag_min":9.887,"radial_velocity_km_s":-13.3,"spectral_type_source":"SIMBAD (1974ApJS...28....1J, quality C)","surface_gravity_log_g":4.709,"surface_temperature_k":3768,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":472.04,"proper_motion_dec_mas_yr":-75.3,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.0529},"designations":[{"catalog":"Gliese","designation":"Gl 835"},{"catalog":"HIP","designation":"HIP 106811"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}